The article notes that Twitter has had a huge impact on things like the relief efforts in Haiti and has given a voice to people who are normally suppressed by their governments. It's obviously a revolutionary form of communication that has had a huge impact on society and our culture.
But for every meaningful "tweet" on Twitter there's probably a million more that are completely useless. Do Lindsay Lohan's rants really need to be archived in the Library of Congress?
Anyway, I just thought it was interesting that something like Twitter is now being taken seriously as a way of studying our culture and society. Does this legitimize Twitter as a real form of writing? Is there a difference between a "tweet" and a postcard?